Fountain-pen.



Patented Oct. 16, 1917.

hie 7757- Y N, WW1

CECIL BRIsTow, orjnonn'oiv, ENGLAND.

' FOUNTA N-PEN.

To all whom it may concern h Be it known that 'I, CECIL Bnis'row, of 20 St. Gerlnans road, Forest Hill, London,- England, have invented certaln new and useful Improvements in or Relating to Fountain-Pens, of which the following is a specification. p

This invention relates to fountain pens of the type in which an elastic bagdisposed'in the barrel of the penis adapted to be compressed by a 19:"81 and plate, said bag being -allowed to create v.a suction whereby ink is In a pen made in accordance with this invention the lever is supported on a hearing which is disposed in an annular groove formed on the inside, of the barrel. Within the barrel is disposed a spring which is held at the end nearest the nib against the side of the barrel and the other or free end is fastened to the said plate- (hereinafter called the presser plate) which bears on the elastic tube. When the lever is raised the short end thereof presses down the spring and the presser plate attached thereto on to the bag, compressing it and driving the air out.

-Figure 1 is a diagrammatic section of one form of fountain pen made in accordance with this invention.

Fig. 2 is a plan. I

Fig. 3 is a plan of the presser plate and spring the wings of .the sprin being tened out. I

Fig. 4 is a cross section of presser plate and spring. A

Fig. 5 is an elevation of the bag.

Fig. 6 is a side view of the spring bent over to form a stop.

Fig. 7 is a perspective view of the collar. Fig. 8 is a cross-section of the pen barrel on the line 88, Fig. 1.

The barrel (6 of the fountain pen'has a longitudinal slot I), one end of which slopes lever is mounted on a bearing or hinge'pin g which is disposed in an annular groove (Z in the barrel, and on which bearing the lever is free to turn. The lever f, when closed,

' fills the slot Z) as illustrated in Fig. 2. In

this position its sloping end j fits the slopt to give it su Y Specification of Letters Patent. Patentedgflct. 16', 1917;.

Application filed. July 29., 1915. Serial No. 42,536; i

sponds with recess 6;. Y

The short endof the lever f provided I w1th a heel is to insure contact wlth sprlng when the lever is closed and thus' keeping same down in the slot-Y).

An elastic bag m attached tol the' nibf holder n is adapted to lie in the: barrel a.

Between the bag m and the barrel a" is a spring 0, one end of which is attached to a presser platep. The otherend is shaped with wings '9 g which canbe bent to the curve of the barrel. so as to hold. the spring firmly within the barrel and against the inner surface thereof.

bears when it is in its raised position. If the hinge pin 9 for the lever f is supported as illustrated in the groove d, means are preferably provided for holding the hinge pin in place such as a split collar 8 so disposed that the slit registers with the longitudinal slot in the barrel and supports the runnions in the annular groove.

The presserg'plate is or may be flanged at icient rigidity. The stop '1" may be of a separate piece as shown in Fig l or it may be formed by bending over the end of the spring as shown in Fig. 6.

In operationwhen it is desired to fill the pen with ink the lever f is raised as shown in ig. 1 forcing the presser plate p on to the bag so as to compress it and drive out the air. On lowering the lever f the bag expands and draws in ink from an external source, when the nib is inserted therein.

The support of the lever f and the dispo'-- sition of the spring 0 and plate 30 are'the characteristic features of the invention and avoid difiiculties experienced in pens of this type.

Instead of the spring being fastened as shown in Fig. 1 it might be shorter and fastened nearer the center of the plate.

"What I claim. and desire to secure by Letters Patent is 1. In fountain pens a barrel provided with a longitudinal slot and an annular groove a lever pivotally mounted in said slot, bearings for said lever lying in said annular groove, means for supporting said hearings in said groove, and means actuated by said lever for drawing ink into said barrel.

. 2. A fountain pen comprising a barrel, a

' longitudinal 'slot and an annular internal 2" is a stop disposed on the spring against which the lever f 'tween the bag and the barrel, one end of the groove in the barrel,-a lever disposed in said slot and a bearing for said lever engaging with said annular groove,- a split collar disposed within the barrel so that the slit is in register with the longitudinal slot and supports the bearingin the annular groove, a

nib holder,' an elastic bag, adapted to contain ink, attached to the nib holder, said bag being disposed within the said barrel, a plate within said barrel adapted to-lie besaid leverpresslng down the said plate when the lever is ra1sed.-

3. A fountain pen comprising a barrel, a

tain attached to the nib holder, said bag being disposed within the said barrel, a plate within said barrel adapted to lie between jthe bag and the barrel, a spring within the \barrel adapted to lie between the plate and the barrel, one end of said spring being formed with a ring adapted to lie against the inner surface of the barrel so asto hold one end of the spring against the barrel toward that end of the barrel nearest the nib, and other end being fastened to the said plate, one end of said lever pressing down the spring when the said lever is raised.

In witness whereof, I have hereunto signed my name in the presence'of two subscribing witnesses.

CECIL BRISTOW.

Witnesses:

Ronnngr MILTON SPEARPOINT,

HERBERT D. J AMESON. 

